At Tuesday night's GOP presidential candidate debate, the last question was: What national security issue do you worry about that nobody is asking about? Answers ranged from socialist rebels to communist China to cyber attacks to joblessness. But Newt Gingrich mentioned a threat that certainly has not been talked about this campaign season: an electromagnetic pulse attack. Guy Raz talks with Noah Shachtman, who writes on national security for Wired magazine, about this potential national security threat.

Guy Raz talks to Associated Press reporter Adam Goldman about the ongoing story of Hezbollah and the CIA spy network in Lebanon.

Guy Raz speaks with Rich Faso, director of customer operations for the Defense Logistic Agency's Troop Support Subsistence supply chain. Faso is in charge of the effort to get Thanksgiving meals to American troops overseas for the holiday.

The U.S. and its allies announced coordinated sanctions against Iran on Monday. In a speech at the Brookings Institution Tuesday, White House national security adviser Tom Donilon argued that it is "undeniable" that Iran is developing a nuclear weapons capability, and that sanctions are working.

Tuesday night's GOP presidential debate was hosted by CNN and two think tanks and was focused on foreign policy. Iran came up several times during the gathering. Is what the candidates said about Iran accurate?

Most of the Republican presidential debates in this election cycle have taken place in a swing state, and focused on the economy. Tuesday night's gathering was different. CNN and two conservative think thanks sponsored the eleventh debate of the year in Washington, D.C.

The uprisings in the Arab world have altered the political landscape in North Africa and the Middle East. Islamist parties, often suppressed under autocratic leaders, have gained ground in Tunisia and are poised to do well in Egypt and Libya as well. This trend has forced the U.S. to rethink its dealings with political Islam. Secretary of State Hillary Clinton says the U.S. will see what those parties do and engage those who play by democratic rules.